Init

games/hack/hack.tty.c

@@ -0,0 +1,239 @@
+#ifndef lint
+static	char sccsid[] = "@(#)hack.tty.c 1.1 94/10/31 SMI";
+#endif
+/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
+/* hack.tty.c - version 1.0.2 */
+
+#include	"hack.h"
+#include	<stdio.h>
+#include	<sgtty.h>
+#include	<ctype.h>	/* for isprint() */
+
+struct sgttyb inittyb, curttyb;
+extern short ospeed;
+char erase_char, kill_char;
+static boolean settty_needed = FALSE;
+
+/*
+ * Get initial state of terminal, set ospeed (for termcap routines)
+ * and switch off tab expansion if necessary.
+ * Called by startup() in termcap.c and after returning from ! or ^Z
+ */
+gettty(){
+	(void) gtty(0, &inittyb);
+	(void) gtty(0, &curttyb);
+	ospeed = inittyb.sg_ospeed;
+	erase_char = inittyb.sg_erase;
+	kill_char = inittyb.sg_kill;
+	getioctls();
+
+	/* do not expand tabs - they might be needed inside a cm sequence */
+	if(curttyb.sg_flags & XTABS) {
+		curttyb.sg_flags &= ~XTABS;
+		setctty();
+	}
+	settty_needed = TRUE;
+}
+
+/* fatal error */
+/*VARARGS1*/
+error(s,x,y) char *s; {
+	if(settty_needed)
+		settty((char *) 0);
+	printf(s,x,y);
+	putchar('\n');
+	exit(1);
+}
+
+/* reset terminal to original state */
+settty(s) char *s; {
+	clear_screen();
+	end_screen();
+	if(s) printf(s);
+	(void) fflush(stdout);
+	if(stty(0, &inittyb) == -1)
+		puts("Cannot change tty");
+	flags.echo = (inittyb.sg_flags & ECHO) ? ON : OFF;
+	flags.cbreak = (inittyb.sg_flags & CBREAK) ? ON : OFF;
+	setioctls();
+}
+
+setctty(){
+	if(stty(0, &curttyb) == -1) puts("Cannot change tty");
+}
+
+
+setftty(){
+	flags.cbreak = ON;
+	flags.echo = OFF;
+	setxtty();
+}
+
+setxtty(){
+register int ef = (flags.echo == ON) ? ECHO : 0;
+register int cf = (flags.cbreak == ON) ? CBREAK : 0;
+register int change = 0;
+	/* Should use (ECHO|CRMOD) here instead of ECHO */
+	if((curttyb.sg_flags & ECHO) != ef){
+		curttyb.sg_flags &= ~ECHO;
+		curttyb.sg_flags |= ef;
+		change++;
+	}
+	if((curttyb.sg_flags & CBREAK) != cf){
+		curttyb.sg_flags &= ~CBREAK;
+		curttyb.sg_flags |= cf;
+		change++;
+	}
+	if(change){
+		setctty();
+	}
+	start_screen();
+}
+
+/*
+ * Read a line closed with '\n' into the array char bufp[BUFSZ].
+ * (The '\n' is not stored. The string is closed with a '\0'.)
+ * Reading can be interrupted by an escape ('\033') - now the
+ * resulting string is "\033".
+ */
+getlin(bufp)
+register char *bufp;
+{
+	register char *obufp = bufp;
+	register int c;
+
+	flags.toplin = 2;		/* nonempty, no --More-- required */
+	for(;;) {
+		(void) fflush(stdout);
+		if((c = getchar()) == EOF) {
+			*bufp = 0;
+			return;
+		}
+		if(c == '\033') {
+			*obufp = c;
+			obufp[1] = 0;
+			return;
+		}
+		if(c == erase_char || c == '\b') {
+			if(bufp != obufp) {
+				bufp--;
+				putstr("\b \b"); /* putsym converts \b */
+			} else	bell();
+		} else if(c == '\n') {
+			*bufp = 0;
+			return;
+		} else if(c == kill_char || c == '\177') { /* Robert Viduya */
+			while(bufp != obufp) {
+				bufp--;
+				putstr("\b \b");
+			}
+		} else if(isprint(c) || c == ' ') {
+			*bufp = c;
+			bufp[1] = 0;
+			putstr(bufp);
+			if(bufp-obufp < BUFSZ-1 && bufp-obufp < COLNO)
+				bufp++;
+		} else
+			bell();
+	}
+}
+
+getret() {
+	xgetret("");
+}
+
+cgetret(s)
+register char *s;
+{
+	xgetret(s);
+}
+
+xgetret(s)
+register char *s;
+{
+	putsym('\n');
+	if(flags.standout)
+		standoutbeg();
+	putstr("Hit ");
+	putstr(flags.cbreak ? "space" : "return");
+	putstr(" to continue: ");
+	if(flags.standout)
+		standoutend();
+	xwaitforspace(s);
+}
+
+char morc;	/* tell the outside world what char he used */
+
+xwaitforspace(s)
+register char *s;	/* chars allowed besides space or return */
+{
+register int c;
+
+	(void) fflush(stdout);
+	morc = 0;
+
+	while((c = getchar()) != '\n') {
+	    if(c == EOF)
+		end_of_input();
+	    if(flags.cbreak) {
+		if(c == ' ') break;
+		if(s && index(s,c)) {
+			morc = c;
+			break;
+		}
+		bell();		/* useless if !cbreak */
+	    }
+	}
+}
+
+char *
+parse()
+{
+	static char inline[COLNO];
+	register foo;
+
+	flags.move = 1;
+	if(!Invis) curs_on_u(); else home();
+	(void) fflush(stdout);
+	while((foo = getchar()) >= '0' && foo <= '9')
+		multi += 10*multi+foo-'0';
+	if(multi) {
+		multi--;
+		save_cm = inline;
+	}
+	inline[0] = foo;
+	inline[1] = 0;
+	if(foo == EOF)
+		end_of_input();
+	if(foo == 'f' || foo == 'F'){
+		inline[1] = getchar();
+#ifdef QUEST
+		if(inline[1] == foo) inline[2] = getchar(); else
+#endif QUEST
+		inline[2] = 0;
+	}
+	if(foo == 'm' || foo == 'M'){
+		inline[1] = getchar();
+		inline[2] = 0;
+	}
+	clrlin();
+	return(inline);
+}
+
+char
+readchar() {
+	register int sym;
+	(void) fflush(stdout);
+	if((sym = getchar()) == EOF)
+		end_of_input();
+	if(flags.toplin == 1) flags.toplin = 2;
+	return((char) sym);
+}
+
+end_of_input()
+{
+	settty("End of input?\n");
+	clearlocks();
+	exit(0);
+}
+